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While the doctor can directly observe the inner ear canal through the ear lamp or the mirror, the earwax can be taken out directly with a q-tip or medical tweezers. When the earwax has formed and the earwax is hard to remove, the doctor can also use ear drops to soften the earwax. The softened earwax is expelled from the external auditory canal and is easy to clean.
Spacecraft flew hundreds of thousands to hundreds of millions of kilometers from the earth, injecting speed when the size and direction of a slight error, arrived at target planets will appear large deviation error, for example, when Mars probe injecting speed 1 m/s speed (about one over ten thousand), arrived at Mars, about 100000 km distance deviation. Therefore, precise control and navigation must be carried out during the long flight. Flying to the moon is usually controlled by the orbital control system of the ground and space probe (see orbit control). Interplanetary flight distances, radio signal transmission time is long, the real-time remote control, can't so planets and interplanetary spacecraft orbit control system shall have the ability of autonomous navigation (see interstellar travel navigation and control). The United States, for example, "pirates" spacecraft in space flight of more than eight hundred million km, for 11 months of 2000 times of autonomous orbit adjustment, the final surface to achieve a soft landing on Mars, placement accuracy up to 50 km. In addition, in order to ensure the accuracy of the orbit control engine, the communication antenna is always aimed at the earth, and other systems work normally, and the detector has the autonomous attitude control ability
The tire is one of the most important components of the car, its main function is: support the vehicle all the weight, bear the load of the car; To transmit traction and brake torque to ensure the adhesion of wheels and pavement; Reduce and absorb the vibration and impact of the car while driving, prevent violent vibration and early damage of the auto parts, to adapt to the high speed of the vehicle performance and reduce the noise of cars, to ensure driving safety and handling stability, comfort, energy conservation and economical efficiency
British Glass is calling for seminar presentations, based on practical examples of large manufacturing businesses securing funding for improvement in energy efficiency and carbon reduction, for a one-day glass industry event in November 2017.
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